Difference Between Tantalum And Ceramic Capacitors

A tantalum cap is a form of dry electrolytic cap.

Difference between tantalum and ceramic capacitors.

This paper compares the x7r x6s or x5r dielectric types of ce ramic capacitors with tantalum capacitors. Tantalum electrolytic capacitors can achieve a small capacitance while the ceramic capacitor can hardly achieve the ideal performance when the capacitance is large. In contrast to tantalum capacitors ceramic capacitors have less overall plate area and significantly thicker layers but compensate for such deficiencies by using dielectric materials with a much higher dielectric constant. Depending on the application the capacitor type is chosen.

A ceramic cap is a disc type that has a piece of ceramic wafer between the plates. Ceramic chips are rated from 6 3 v to 200 v with others up to 5 kv. Figure 2a 2b. Basic differences ceramic capacitors have a multitude of dielectric types available and each of these types is characterized by their sensitivities to temperature but not to voltage or time.

They overlap with tantalum capacitors in capaci. Tantalum capacitors are polarized devices so correct polarity must be maintained on the pc board. Tantalum are low voltage devices suitable for computer and power supply applications. Higher esr than ceramics.

Surface mount tantalum capacitors typically feature a bottom electrode structure. Comparison of multilayer ceramic and tantalum capacitors by jeffrey cain ph d. High and stable capacitor values that are not affected by applied voltage. Tantalum capacitors and ceramic capacitors also have different uses.

This is significantly less in ceramic capacitors than in tantalums 0 001 μa compared to 0 5 30 μa. Ceramics can withstand high voltage and high frequency applications so they are quite common in radio equipment. Ceramic capacitor vs tantalum capacitor. Tantalum capacitors configured with electrodes on the bottom of the package are not susceptible to shorts even when mounted close together facing each other.

No piezo electric properties that may result in circuit noise. Tantalum capacitors can be used as coupling and the frequency range of such circuits as filter oscillatory bypass is large while ceramic capacitors are mostly used in high frequency circuits. Ceramic capaci tors constructed with these dielectrics offer moderate dielec tric constants with moderate temperature and voltage sensi tivities. The dc working voltage of tantalum chip capacitors is limited to between 4 v and 50 v.